/*
 * Copyright 2013 Sigurd Randoll.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package de.digiway.rapidbreeze.server.infrastructure.objectstorage;

import de.digiway.rapidbreeze.server.config.ServerConfigurationFixtures;

/**
 * Factory class handling {@linkplain ObjectStorage} instances.
 *
 * @author Sigurd
 */
public class ObjectStorageFactory {

    private static ObjectStorage storage;

    /**
     * Retrieves an instance of a {@linkplain ObjectStorage}.
     *
     * @return
     */
    public static ObjectStorage getInstance() {
        if (storage == null) {
            storage = new ObjectStorage(ServerConfigurationFixtures.getInstance().getObjectStorageLocation());
            Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {
                @Override
                public void run() {
                    storage.close();
                }
            }));
        }
        return storage;
    }
}
